spring MapPropertySource 源码
spring MapPropertySource 代码
文件路径：/spring-core/src/main/java/org/springframework/core/env/MapPropertySource.java
/*
* Copyright 2002-2020 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.core.env;
import java.util.Map;
import org.springframework.lang.Nullable;
import org.springframework.util.StringUtils;
/**
* {@link PropertySource} that reads keys and values from a {@code Map} object.
* The underlying map should not contain any {@code null} values in order to
* comply with {@link #getProperty} and {@link #containsProperty} semantics.
*
* @author Chris Beams
* @author Juergen Hoeller
* @since 3.1
* @see PropertiesPropertySource
*/
public class MapPropertySource extends EnumerablePropertySource<Map<String, Object>> {
/**
* Create a new {@code MapPropertySource} with the given name and {@code Map}.
* @param name the associated name
* @param source the Map source (without {@code null} values in order to get
* consistent {@link #getProperty} and {@link #containsProperty} behavior)
*/
public MapPropertySource(String name, Map<String, Object> source) {
super(name, source);
}
@Override
@Nullable
public Object getProperty(String name) {
return this.source.get(name);
}
@Override
public boolean containsProperty(String name) {
return this.source.containsKey(name);
}
@Override
public String[] getPropertyNames() {
return StringUtils.toStringArray(this.source.keySet());
}
}
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